249704380529 has 2 divisors, whose sum is σ = 249704380530. Its totient is φ = 249704380528.

The previous prime is 249704380459. The next prime is 249704380547. The reversal of 249704380529 is 925083407942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177976828129 + 71727552400 = 421873^2 + 267820^2 .

It is a cyclic number.

It is not a de Polignac number, because 249704380529 - 2¹² = 249704376433 is a prime.

It is not a weakly prime, because it can be changed into another prime (249704385529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124852190264 + 124852190265.

It is an arithmetic number, because the mean of its divisors is an integer number (124852190265).

Almost surely, 2^249704380529 is an apocalyptic number.

It is an amenable number.

249704380529 is a deficient number, since it is larger than the sum of its proper divisors (1).

249704380529 is an equidigital number, since it uses as much as digits as its factorization.

249704380529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 249704380529 in words is "two hundred forty-nine billion, seven hundred four million, three hundred eighty thousand, five hundred twenty-nine".